[MIPS] Add MIPS Android related changes to gn build system

build/config/compiler/BUILD.gn

Index: build/config/compiler/BUILD.gn
diff --git a/build/config/compiler/BUILD.gn b/build/config/compiler/BUILD.gn
index 70f1fd2374c5dd5947a3acaafefd4ab57ea8d7d2..95f74e6636b2d1438258eab8602200604afff0e8 100644
--- a/build/config/compiler/BUILD.gn
+++ b/build/config/compiler/BUILD.gn
@@ -406,10 +406,23 @@ config("runtime_library") {
       }
     }
 
+    if (cpu_arch == "mipsel") {
+      libs += [
+        # ld linker is used for mips Android, and ld does not accept library
+        # absolute path prefixed by "-l"; Since libgcc does not exist in mips
+        # sysroot the proper library will be linked.
+        # TODO(gordanac): Remove once gold linker is used for mips Android.
+        "gcc",
+      ]
+    } else {
+      libs += [
+        # Manually link the libgcc.a that the cross compiler uses. This is
+        # absolute because the linker will look inside the sysroot if it's not.
+        rebase_path(android_libgcc_file),
+      ]
+    }
+
     libs += [
-      # Manually link the libgcc.a that the cross compiler uses. This is
-      # absolute because the linker will look inside the sysroot if it's not.
-      rebase_path(android_libgcc_file),
       "c",
       "dl",
       "m",