Allow the max url length to be overridden

android_webview/lib/main/aw_main_delegate.cc

Index: android_webview/lib/main/aw_main_delegate.cc
diff --git a/android_webview/lib/main/aw_main_delegate.cc b/android_webview/lib/main/aw_main_delegate.cc
index 5b79eb6ff2854d121859fba72c4300ac697a203e..b7aa7daaf86b3d568f2f534e7787b8c0da6b0693 100644
--- a/android_webview/lib/main/aw_main_delegate.cc
+++ b/android_webview/lib/main/aw_main_delegate.cc
@@ -23,6 +23,7 @@
 #include "content/public/browser/browser_main_runner.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/common/content_switches.h"
+#include "content/public/common/url_utils.h"
 #include "gpu/command_buffer/client/gl_in_process_context.h"
 #include "gpu/command_buffer/service/in_process_command_buffer.h"
 #include "webkit/common/gpu/webgraphicscontext3d_in_process_command_buffer_impl.h"
@@ -48,6 +49,10 @@ AwMainDelegate::~AwMainDelegate() {
 bool AwMainDelegate::BasicStartupComplete(int* exit_code) {
   content::SetContentClient(&content_client_);
 
+  // This is needed for WebView Classic backwards compatibility
+  // See crbug.com/298495
+  content::SetMaxURLChars(20 * 1024 * 1024);
+
   gpu::InProcessCommandBuffer::SetGpuMemoryBufferFactory(
       gpu_memory_buffer_factory_.get());
   gpu::InProcessCommandBuffer::EnableVirtualizedContext();