[Android WebView] Add a quirk to clobber initial scale in certain cases

Source/web/WebSettingsImpl.cpp

Index: Source/web/WebSettingsImpl.cpp
diff --git a/Source/web/WebSettingsImpl.cpp b/Source/web/WebSettingsImpl.cpp
index 4b29790e45a2460e75d1431093cfe04a1eb8b62c..a19f75c99ce92b0f39bef66951604110eb405f49 100644
--- a/Source/web/WebSettingsImpl.cpp
+++ b/Source/web/WebSettingsImpl.cpp
@@ -57,6 +57,7 @@ WebSettingsImpl::WebSettingsImpl(Settings* settings)
     , m_doubleTapToZoomEnabled(false)
     , m_supportDeprecatedTargetDensityDPI(false)
     , m_viewportMetaLayoutSizeQuirk(false)
+    , m_clobberUserAgentInitialScaleQuirk(false)
     , m_pinchOverlayScrollbarThickness(0)
 {
     ASSERT(settings);
@@ -212,6 +213,11 @@ void WebSettingsImpl::setReportScreenSizeInPhysicalPixelsQuirk(bool reportScreen
     m_settings->setReportScreenSizeInPhysicalPixelsQuirk(reportScreenSizeInPhysicalPixelsQuirk);
 }
 
+void WebSettingsImpl::setClobberUserAgentInitialScaleQuirk(bool clobberUserAgentInitialScaleQuirk)
+{
+    m_clobberUserAgentInitialScaleQuirk = clobberUserAgentInitialScaleQuirk;
+}
+
 void WebSettingsImpl::setSupportsMultipleWindows(bool supportsMultipleWindows)
 {
     m_settings->setSupportsMultipleWindows(supportsMultipleWindows);