XFA: clang-format all pdfium code, again.

Also add a presubmit that checks for this so I don't have to keep doing it.
No behavior change.

Generated by:
  find . -name '*.cpp' -o -name '*.h' | \
  grep -E -v 'third_party|thirdparties|lpng_v163|tiff_v403' | \
  xargs ../../buildtools/mac/clang-format -i
Then manually merged https://codereview.chromium.org/1269223002/

See thread "tabs vs spaces" on pdfium@googlegroups.com for discussion.

BUG=none
R=thestig@chromium.org

Review URL: https://codereview.chromium.org/1277043002 .
diff --git a/fpdfsdk/include/javascript/JS_Define.h b/fpdfsdk/include/javascript/JS_Define.h
index 11471af..17bf7b1 100644
--- a/fpdfsdk/include/javascript/JS_Define.h
+++ b/fpdfsdk/include/javascript/JS_Define.h
@@ -37,10 +37,10 @@
 #define BEGIN_JS_STATIC_CONST(js_class_name) \
   JSConstSpec js_class_name::JS_Class_Consts[] = {
 #define JS_STATIC_CONST_ENTRY_NUMBER(const_name, pValue) \
-  { const_name, pValue, L"", 0 }          \
+  { const_name, pValue, L"", 0 }                         \
   ,
-#define JS_STATIC_CONST_ENTRY_STRING(const_name, pValue)     \
-  { const_name, 0, pValue, 1 } \
+#define JS_STATIC_CONST_ENTRY_STRING(const_name, pValue) \
+  { const_name, 0, pValue, 1 }                           \
   ,
 #define END_JS_STATIC_CONST() \
   { 0, 0, 0, 0 }              \
@@ -190,8 +190,8 @@
   const wchar_t* js_class_name::m_pClassName = JS_WIDESTRING(class_name);      \
   void js_class_name::JSConstructor(IFXJS_Context* cc, JSFXObject obj,         \
                                     JSFXObject global) {                       \
-    CJS_Object* pObj = new js_class_name(obj);                              \
-    pObj->SetEmbedObject(new class_alternate(pObj));                        \
+    CJS_Object* pObj = new js_class_name(obj);                                 \
+    pObj->SetEmbedObject(new class_alternate(pObj));                           \
     JS_SetPrivate(NULL, obj, (void*)pObj);                                     \
     pObj->InitInstance(cc);                                                    \
   }                                                                            \
@@ -398,8 +398,8 @@
   }                                                                            \
   void js_class_name::JSConstructor(IFXJS_Context* cc, JSFXObject obj,         \
                                     JSFXObject global) {                       \
-    CJS_Object* pObj = new js_class_name(obj);                              \
-    pObj->SetEmbedObject(new class_alternate(pObj));                        \
+    CJS_Object* pObj = new js_class_name(obj);                                 \
+    pObj->SetEmbedObject(new class_alternate(pObj));                           \
     JS_SetPrivate(NULL, obj, (void*)pObj);                                     \
     pObj->InitInstance(cc);                                                    \
   }                                                                            \