Fix for the WebInputEventBuilderTest.TestMouseEventScale content_unittests failures on the DrMemory…

content/browser/renderer_host/input/web_input_event_unittest.cc

Index: content/browser/renderer_host/input/web_input_event_unittest.cc
diff --git a/content/browser/renderer_host/input/web_input_event_unittest.cc b/content/browser/renderer_host/input/web_input_event_unittest.cc
index 51f9e19b92eda42512dd20d44fd7a21692bc74e5..f78143650191a9d259963d1410f99b775d875fe9 100644
--- a/content/browser/renderer_host/input/web_input_event_unittest.cc
+++ b/content/browser/renderer_host/input/web_input_event_unittest.cc
@@ -6,6 +6,7 @@
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/WebKit/public/web/WebInputEvent.h"
 #include "ui/events/event_constants.h"
+#include "ui/gfx/display.h"
 #include "ui/gfx/switches.h"
 
 #if defined(OS_WIN)
@@ -24,6 +25,8 @@ TEST(WebInputEventBuilderTest, TestMouseEventScale) {
   if (base::win::GetVersion() < base::win::VERSION_WIN7)
     return;
 
+  gfx::Display::ResetForceDeviceScaleFactorForTesting();
+
   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
   command_line->AppendSwitchASCII(switches::kForceDeviceScaleFactor, "2");
 
@@ -47,6 +50,7 @@ TEST(WebInputEventBuilderTest, TestMouseEventScale) {
   EXPECT_EQ(100, mouse_move.globalY);
 
   command_line->AppendSwitchASCII(switches::kForceDeviceScaleFactor, "1");
+  gfx::Display::ResetForceDeviceScaleFactorForTesting();
 }
 #endif