XFA: clang-format all pdfium code.

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
diff --git a/fpdfsdk/src/javascript/resource.cpp b/fpdfsdk/src/javascript/resource.cpp
index 4375da3..5b6bd48 100644
--- a/fpdfsdk/src/javascript/resource.cpp
+++ b/fpdfsdk/src/javascript/resource.cpp
@@ -6,61 +6,59 @@
 
 #include "../../include/javascript/resource.h"
 
-CFX_WideString JSGetStringFromID(CJS_Context* pContext, FX_UINT id)
-{
-    switch (id)
-    {
+CFX_WideString JSGetStringFromID(CJS_Context* pContext, FX_UINT id) {
+  switch (id) {
     case IDS_STRING_JSALERT:
-        return L"Alert";
+      return L"Alert";
     case IDS_STRING_JSPARAMERROR:
-        return L"Incorrect number of parameters passed to function.";
+      return L"Incorrect number of parameters passed to function.";
     case IDS_STRING_JSAFNUMBER_KEYSTROKE:
-        return L"The input value is invalid.";
+      return L"The input value is invalid.";
     case IDS_STRING_JSPARAM_TOOLONG:
-        return L"The input value is too long.";
+      return L"The input value is too long.";
     case IDS_STRING_JSPARSEDATE:
-        return L"The input value can't be parsed as a valid date/time (%s).";
+      return L"The input value can't be parsed as a valid date/time (%s).";
     case IDS_STRING_JSRANGE1:
-        return L"The input value must be greater than or equal to %s"
-               L" and less than or equal to %s.";
+      return L"The input value must be greater than or equal to %s"
+             L" and less than or equal to %s.";
     case IDS_STRING_JSRANGE2:
-        return L"The input value must be greater than or equal to %s.";
+      return L"The input value must be greater than or equal to %s.";
     case IDS_STRING_JSRANGE3:
-        return L"The input value must be less than or equal to %s.";
+      return L"The input value must be less than or equal to %s.";
     case IDS_STRING_NOTSUPPORT:
-        return L"Operation not supported.";
+      return L"Operation not supported.";
     case IDS_STRING_JSBUSY:
-        return L"System is busy.";
+      return L"System is busy.";
     case IDS_STRING_JSEVENT:
-        return L"Duplicate formfield event found.";
+      return L"Duplicate formfield event found.";
     case IDS_STRING_RUN:
-        return L"Script ran successfully.";
+      return L"Script ran successfully.";
     case IDS_STRING_JSPRINT1:
-        return L"The second parameter can't be converted to a Date.";
+      return L"The second parameter can't be converted to a Date.";
     case IDS_STRING_JSPRINT2:
-        return L"The second parameter is an invalid Date!";
+      return L"The second parameter is an invalid Date!";
     case IDS_STRING_JSNOGLOBAL:
-        return L"Global value not found.";
+      return L"Global value not found.";
     case IDS_STRING_JSREADONLY:
-        return L"Cannot assign to readonly property.";
+      return L"Cannot assign to readonly property.";
     case IDS_STRING_JSTYPEERROR:
-        return L"Incorrect parameter type.";
+      return L"Incorrect parameter type.";
     case IDS_STRING_JSVALUEERROR:
-        return L"Incorrect parameter value.";
+      return L"Incorrect parameter value.";
     default:
-        return L"";
-    }
+      return L"";
+  }
 }
 
 CFX_WideString JSFormatErrorString(const char* class_name,
                                    const char* property_name,
                                    const CFX_WideString& details) {
-    CFX_WideString result = CFX_WideString::FromLocal(class_name);
-    if (property_name) {
-        result += L".";
-        result += CFX_WideString::FromLocal(property_name);
-    }
-    result += L": ";
-    result += details;
-    return result;
+  CFX_WideString result = CFX_WideString::FromLocal(class_name);
+  if (property_name) {
+    result += L".";
+    result += CFX_WideString::FromLocal(property_name);
+  }
+  result += L": ";
+  result += details;
+  return result;
 }