[cleanup] Clean up underscores in some test names

Tests written with the GoogleTest framework should
not use underscores in test names.

Cleaning up some stragglers.

```
CFX_FolderFontInfoTest
CFX_WindowsRenderDeviceTest
FPDFRenderPatternEmbedderTest.LoadError_547706
FXCRYPT.CRYPT_ArcFour*
```
etc

Bug: 42270790
Change-Id: I763b592d7714a39de5f660a7ac7ed5e1dc9cdd52
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/125410
Reviewed-by: Lei Zhang <thestig@chromium.org>
Reviewed-by: Thomas Sepez <tsepez@google.com>
Commit-Queue: Ho Cheung <hocheung@chromium.org>
diff --git a/core/fdrm/fx_crypt_unittest.cpp b/core/fdrm/fx_crypt_unittest.cpp
index f4ae16b..64f3efa 100644
--- a/core/fdrm/fx_crypt_unittest.cpp
+++ b/core/fdrm/fx_crypt_unittest.cpp
@@ -245,7 +245,7 @@
                           0xd4, 0x19, 0xdb, 0x06, 0xc1));
 }
 
-TEST(FXCRYPT, CRYPT_ArcFourSetup) {
+TEST(FXCRYPT, CRYPTArcFourSetup) {
   {
     static const uint8_t
         kNullPermutation[CRYPT_rc4_context::kPermutationLength] = {
@@ -303,7 +303,7 @@
   }
 }
 
-TEST(FXCRYPT, CRYPT_ArcFourCrypt) {
+TEST(FXCRYPT, CRYPTArcFourCrypt) {
   static const uint8_t kDataShort[] =
       "The Quick Fox Jumped Over The Lazy Brown Dog.";
   static const uint8_t kDataLong[] =
diff --git a/core/fpdfapi/render/fpdf_render_pattern_embeddertest.cpp b/core/fpdfapi/render/fpdf_render_pattern_embeddertest.cpp
index 68505e5..4cb6e15 100644
--- a/core/fpdfapi/render/fpdf_render_pattern_embeddertest.cpp
+++ b/core/fpdfapi/render/fpdf_render_pattern_embeddertest.cpp
@@ -9,7 +9,7 @@
 
 class FPDFRenderPatternEmbedderTest : public EmbedderTest {};
 
-TEST_F(FPDFRenderPatternEmbedderTest, LoadError_547706) {
+TEST_F(FPDFRenderPatternEmbedderTest, LoadError547706) {
   // Test shading where object is a dictionary instead of a stream.
   ASSERT_TRUE(OpenDocument("bug_547706.pdf"));
   ScopedEmbedderTestPage page = LoadScopedPage(0);
diff --git a/core/fxge/cfx_folderfontinfo.h b/core/fxge/cfx_folderfontinfo.h
index ec53226..e97bc4c 100644
--- a/core/fxge/cfx_folderfontinfo.h
+++ b/core/fxge/cfx_folderfontinfo.h
@@ -46,7 +46,7 @@
   bool GetFontCharset(void* hFont, FX_Charset* charset) override;
 
  protected:
-  friend class CFX_FolderFontInfoTest;
+  friend class CFXFolderFontInfoTest;
 
   class FontFaceInfo {
    public:
diff --git a/core/fxge/cfx_folderfontinfo_unittest.cpp b/core/fxge/cfx_folderfontinfo_unittest.cpp
index 8cdb8b9..9b67f57 100644
--- a/core/fxge/cfx_folderfontinfo_unittest.cpp
+++ b/core/fxge/cfx_folderfontinfo_unittest.cpp
@@ -31,9 +31,9 @@
 
 }  // namespace
 
-class CFX_FolderFontInfoTest : public ::testing::Test {
+class CFXFolderFontInfoTest : public ::testing::Test {
  public:
-  CFX_FolderFontInfoTest() {
+  CFXFolderFontInfoTest() {
     AddDummyFont(kArial, CHARSET_FLAG_ANSI);
     AddDummyFont(kCourierNew, CHARSET_FLAG_ANSI);
     AddDummyFont(kTimesNewRoman, 0);
@@ -71,7 +71,7 @@
   CFX_FolderFontInfo font_info_;
 };
 
-TEST_F(CFX_FolderFontInfoTest, TestFindFont) {
+TEST_F(CFXFolderFontInfoTest, TestFindFont) {
   // Find "Symbol" font
   void* font = FindFont(/*weight=*/0, /*bItalic=*/false, FX_Charset::kSymbol,
                         FXFONT_FF_ROMAN, kSymbol, /*bMatchName=*/true);
diff --git a/core/fxge/cfx_windowsrenderdevice_embeddertest.cpp b/core/fxge/cfx_windowsrenderdevice_embeddertest.cpp
index b637b46..2dc4025 100644
--- a/core/fxge/cfx_windowsrenderdevice_embeddertest.cpp
+++ b/core/fxge/cfx_windowsrenderdevice_embeddertest.cpp
@@ -20,7 +20,7 @@
 
 }  // namespace
 
-class CFX_WindowsRenderDeviceTest : public EmbedderTest {
+class CFXWindowsRenderDeviceTest : public EmbedderTest {
  public:
   void SetUp() override {
     EmbedderTest::SetUp();
@@ -46,7 +46,7 @@
   std::unique_ptr<CFX_WindowsRenderDevice> m_driver;
 };
 
-TEST_F(CFX_WindowsRenderDeviceTest, SimpleClipTriangle) {
+TEST_F(CFXWindowsRenderDeviceTest, SimpleClipTriangle) {
   CFX_Path path_data;
   CFX_PointF p1(0.0f, 0.0f);
   CFX_PointF p2(0.0f, 100.0f);
@@ -60,7 +60,7 @@
       path_data, &kIdentityMatrix, CFX_FillRenderOptions::WindingOptions()));
 }
 
-TEST_F(CFX_WindowsRenderDeviceTest, SimpleClipRect) {
+TEST_F(CFXWindowsRenderDeviceTest, SimpleClipRect) {
   CFX_Path path_data;
 
   path_data.AppendRect(0.0f, 100.0f, 200.0f, 0.0f);
@@ -69,7 +69,7 @@
       path_data, &kIdentityMatrix, CFX_FillRenderOptions::WindingOptions()));
 }
 
-TEST_F(CFX_WindowsRenderDeviceTest, GargantuanClipRect) {
+TEST_F(CFXWindowsRenderDeviceTest, GargantuanClipRect) {
   CFX_Path path_data;
 
   path_data.AppendRect(-257698020.0f, -257697252.0f, 257698044.0f,
@@ -83,7 +83,7 @@
       path_data, &kIdentityMatrix, CFX_FillRenderOptions::WindingOptions()));
 }
 
-TEST_F(CFX_WindowsRenderDeviceTest, GargantuanClipRectWithBaseClip) {
+TEST_F(CFXWindowsRenderDeviceTest, GargantuanClipRectWithBaseClip) {
   CFX_Path path_data;
   const FX_RECT kBaseClip(0, 0, 5100, 6600);