Add popup layout tests with device scale factor

components/test_runner/test_runner.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/test_runner/test_runner.h"
 
 #include <stddef.h>
 #include <limits>
 #include <utility>
 
+#include "base/command_line.h"
 #include "base/logging.h"
 #include "base/macros.h"
+#include "base/strings/string_number_conversions.h"
 #include "base/strings/stringprintf.h"
 #include "build/build_config.h"
 #include "components/test_runner/mock_credential_manager_client.h"
 #include "components/test_runner/mock_web_speech_recognizer.h"
 #include "components/test_runner/test_interfaces.h"
 #include "components/test_runner/test_preferences.h"
 #include "components/test_runner/web_content_settings.h"
 #include "components/test_runner/web_test_delegate.h"
 #include "components/test_runner/web_test_proxy.h"
 #include "gin/arguments.h"
@@ skipping 26 matching lines @@
 #include "third_party/WebKit/public/web/WebSerializedScriptValue.h"
 #include "third_party/WebKit/public/web/WebSettings.h"
 #include "third_party/WebKit/public/web/WebSurroundingText.h"
 #include "third_party/WebKit/public/web/WebView.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "third_party/skia/include/core/SkCanvas.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/geometry/rect_f.h"
 #include "ui/gfx/geometry/size.h"
 #include "ui/gfx/skia_util.h"
+#include "ui/gfx/switches.h"
 
 #if defined(__linux__) || defined(ANDROID)
 #include "third_party/WebKit/public/web/linux/WebFontRendering.h"
 #endif
 
 using namespace blink;
 
 namespace test_runner {
 
 namespace {
 
 WebString V8StringToWebString(v8::Local<v8::String> v8_str) {
   int length = v8_str->Utf8Length() + 1;
   scoped_ptr<char[]> chars(new char[length]);
   v8_str->WriteUtf8(chars.get(), length);
   return WebString::fromUTF8(chars.get());
 }
 
+double GetDefaultDeviceScaleFactor() {
+  base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
+  if (command_line->HasSwitch(switches::kForceDeviceScaleFactor)) {
+    double scale;
+    std::string value =
+        command_line->GetSwitchValueASCII(switches::kForceDeviceScaleFactor);
+    if (base::StringToDouble(value, &scale))
+      return scale;
+  }
+  return 1.f;
+}
+
 class HostMethodTask : public WebMethodTask<TestRunner> {
  public:
   typedef void (TestRunner::*CallbackMethodType)();
   HostMethodTask(TestRunner* object, CallbackMethodType callback)
       : WebMethodTask<TestRunner>(object), callback_(callback) {}
 
   void RunIfValid() override { (object_->*callback_)(); }
 
  private:
   CallbackMethodType callback_;
@@ skipping 1607 matching lines @@
 
   WebSecurityPolicy::resetOriginAccessWhitelists();
 #if defined(__linux__) || defined(ANDROID)
   WebFontRendering::setSubpixelPositioning(false);
 #endif
 
   if (delegate_) {
     // Reset the default quota for each origin to 5MB
     delegate_->SetDatabaseQuota(5 * 1024 * 1024);
     delegate_->SetDeviceColorProfile("reset");
-    delegate_->SetDeviceScaleFactor(1);
+    delegate_->SetDeviceScaleFactor(GetDefaultDeviceScaleFactor());
     delegate_->SetAcceptAllCookies(false);
     delegate_->SetLocale("");
     delegate_->UseUnfortunateSynchronousResizeMode(false);
     delegate_->DisableAutoResizeMode(WebSize());
     delegate_->DeleteAllCookies();
     delegate_->ResetScreenOrientation();
     delegate_->SetBluetoothMockDataSet("");
     delegate_->ClearGeofencingMockProvider();
     delegate_->ResetPermissions();
     ResetBatteryStatus();
@@ skipping 1458 matching lines @@
 }
 
 void TestRunner::DidLosePointerLockInternal() {
   bool was_locked = pointer_locked_;
   pointer_locked_ = false;
   if (was_locked)
     web_view_->didLosePointerLock();
 }
 
 }  // namespace test_runner